hyperphosphatasia with intellectual disability syndrome 3
Findings
No curated finding names hyperphosphatasia with intellectual disability syndrome 3 yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Any hyperphosphatasia-intellectual disability syndrome in which the cause of the disease is a mutation in the PGAP2 gene.
Definition from the Mondo Disease Ontology (MONDO:0013628), read 2026-09-29. CC BY 4.0.
- Inheritance
- Autosomal recessive inheritance
- Onset and course
- Congenital onset · Infantile onset
HPO, annotations 2026-09-02
Features
38 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Elevated circulating alkaline phosphatase concentrationHPOHP:0003155
- 2 of 2 reported patients
- Motor delayHPOHP:0001270
- 3 of 3 reported patients
- SeizureHPOHP:0001250
- 2 of 2 reported patients
- Severe intellectual disabilityHPOHP:0010864
- 3 of 3 reported patients
- Shortening of all distal phalanges of the fingersHPOHP:0006118
- 2 of 2 reported patients
- Tented upper lip vermilionHPOHP:0010804
- 2 of 2 reported patients
- Wide nasal bridgeHPO
Show the remaining 26
- Anal stenosisHPOHP:0002025
- 1 of 2 reported patients
- Atrial septal defectHPOHP:0001631
- 1 of 2 reported patients
- Bilateral tonic-clonic seizureHPOHP:0002069
- 1 of 2 reported patients
- Broad nasal tipHPOHP:0000455
- 1 of 2 reported patients
- Cleft palateHPOHP:0000175
- 1 of 2 reported patients
- Delayed speech and language developmentHPOHP:0000750
- 1 of 2 reported patients
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- PGAP2HGNC:17893
- Definitive · G2P · Autosomal recessive · 2025
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal recessive · 2023
- Strong · PanelApp Australia · Autosomal recessive · 2025
Where it sits
Other names
5 names
Resolves to: hyperphosphatasia with intellectual disability syndrome 3
- Also called
- hyperphosphatasia with intellectual disability syndrome type 3hyperphosphatasia with mental retardation syndrome 3hyperphosphatasia with mental retardation syndrome type 3hyperphosphatasia-intellectual disability syndrome caused by mutation in PGAP2PGAP2 hyperphosphatasia-intellectual disability syndrome